Ejection Device Weight Reduction via Sliding Member and Push-up Flange
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Solution Overview
Problem
Existing ejection devices for flying objects, such as drones, face challenges in reducing the weight of the device while maintaining the ejection speed of the parachute or paraglider, which is crucial for safety and efficient descent.
Innovation Solution
The ejection device incorporates a sliding member and a push-up member with a flange-like portion to support the ejected object, allowing for efficient ejection without the need for a large container, thus reducing weight without compromising ejection speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a piston is used to push up the parachute, then the ejection speed can be maintained, but the container size and weight increase
Solution Approach 1:
The ejection device is divided into separate functional components: a power source (spring or gas generator) that generates ejection force, a transmission mechanism (lever or piston) that transmits this force, and a support structure (flange-like portion) that holds the parachute. This segmentation allows each component to be optimized independently, reducing overall weight while maintaining ejection speed.
Solution Approach 2:
The invention changes the spatial arrangement by positioning the power source and transmission mechanism horizontally rather than vertically. The lever arm extends in the horizontal direction, allowing the parachute to be ejected forward without requiring a large vertical container space, thus reducing container weight while maintaining ejection speed.
2Weight of moving object
If the container size is reduced to decrease weight, then the space for accommodating the piston is limited, but the ejection speed may be compromised
Solution Approach 1:
The transmission mechanism (lever or piston) is nested within the container in a compact arrangement. The power source is positioned to directly drive the transmission mechanism, which in turn drives the parachute ejection. This nested arrangement maximizes the use of available space within the reduced-size container while ensuring sufficient stroke length to maintain ejection speed.
Solution Approach 2:
The invention employs a dynamic transmission mechanism where a lever or piston converts the force from the power source into directional ejection motion. This dynamic mechanism allows for efficient force transmission over a compact distance, enabling high ejection speed within a reduced container size and weight.
3Speed
If a power source is applied for a longer period to increase ejection speed, then the stroke of the piston must be increased, but the container size increases
Solution Approach 1:
The invention uses a gas generator as the power source, which generates high-pressure gas to rapidly drive the ejection mechanism. This pneumatic approach delivers high force over a short duration and distance, achieving high ejection speed without requiring a long piston stroke or large container length.
Solution Approach 2:
The invention changes the parameters of the power source to deliver high energy in a compact form. By using a spring-loaded mechanism or gas generator with high force output over a short stroke, the system achieves the required ejection speed without increasing container length, optimizing the balance between ejection performance and compact size.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enables a reduction in the overall weight of the ejection device while maintaining the ejection speed of the parachute or paraglider, enhancing the safety and efficiency of the flying object's descent.
Implementation Method 1
a power source that moves the sliding member in the cylinder such that the sliding member projects outward from the inside
Implementation Method 2
a push-up member that has a bottomed cylindrical portion disposed to cover at least a portion of the cylinder and a flange-like portion formed to project outward from an opening portion of the bottomed cylindrical portion or an intermediate portion of a side surface of the bottomed cylindrical portion and is pushed up in one direction by the sliding member
Data Source
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AI summary
Provided are an ejection device with reduced weight without reducing an ejection speed of an ejected object and a flying object including the ejection device. An ejection device 100 includes a piston member 10, a cylinder 14 which accommodates the piston member 10 and is provided with a hole portion 13 for allowing the piston member 10 to project outward during operation, a push-up member 15 pushed up in one direction by the piston member 10, an ejected object 16 pushed up while being supported by the push-up member 15, and a gas generator 17 which moves the piston member 10 in the cylinder 14, and in the ejection device 100, the push-up member 15 has a support portion 20 disposed on a distal end side of the piston member 10 with a tip of the piston member 10 in a moving direction of the piston member 10 set as a reference.